Stretch induces granule exocytosis in toad urinary bladder.
Evidence from this sections and freeze-fracture is presented showing that stretch induces a burst of exocytosis in granular cells of the toad urinary bladder epithelium. Since the role of granule exocytosis in hormonally-induced permeability changes in this tissue has not yet been clarified, we propose that the stretch factor is an important parameter to consider and standardise in future physiological and morpho-functional studies using this model transporting system.
D000818:Animals; D002023:Bufo bufo; D003594:Cytoplasmic Granules / Q000502:physiology* / Q000648:ultrastructure; D005089:Exocytosis; D005260:Female; D005614:Freeze Fracturing; D008297:Male; D008854:Microscopy, Electron; D001743:Urinary Bladder / Q000502:physiology* / Q000648:ultrastructure